EP3154733A1 - Verfahren zum einarbeiten von hinterlegungen in zahnflanken der zähne von zahnrädern - Google Patents
Verfahren zum einarbeiten von hinterlegungen in zahnflanken der zähne von zahnrädernInfo
- Publication number
- EP3154733A1 EP3154733A1 EP15712314.2A EP15712314A EP3154733A1 EP 3154733 A1 EP3154733 A1 EP 3154733A1 EP 15712314 A EP15712314 A EP 15712314A EP 3154733 A1 EP3154733 A1 EP 3154733A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cutting
- teeth
- feed
- wheel
- tooth
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 42
- 238000005520 cutting process Methods 0.000 claims abstract description 83
- 230000036346 tooth eruption Effects 0.000 claims abstract description 22
- 230000033001 locomotion Effects 0.000 claims abstract description 18
- 238000012545 processing Methods 0.000 claims description 14
- 238000006073 displacement reaction Methods 0.000 claims description 9
- 230000007704 transition Effects 0.000 claims description 8
- 230000035515 penetration Effects 0.000 claims description 4
- 238000010348 incorporation Methods 0.000 claims description 3
- 238000012937 correction Methods 0.000 claims description 2
- 230000001747 exhibiting effect Effects 0.000 claims 1
- 238000003754 machining Methods 0.000 abstract description 6
- 238000000151 deposition Methods 0.000 description 6
- 230000004323 axial length Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005352 clarification Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23F—MAKING GEARS OR TOOTHED RACKS
- B23F19/00—Finishing gear teeth by other tools than those used for manufacturing gear teeth
- B23F19/002—Modifying the theoretical tooth flank form, e.g. crowning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23F—MAKING GEARS OR TOOTHED RACKS
- B23F5/00—Making straight gear teeth involving moving a tool relatively to a workpiece with a rolling-off or an enveloping motion with respect to the gear teeth to be made
- B23F5/12—Making straight gear teeth involving moving a tool relatively to a workpiece with a rolling-off or an enveloping motion with respect to the gear teeth to be made by planing or slotting
- B23F5/16—Making straight gear teeth involving moving a tool relatively to a workpiece with a rolling-off or an enveloping motion with respect to the gear teeth to be made by planing or slotting the tool having a shape similar to that of a spur wheel or part thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23F—MAKING GEARS OR TOOTHED RACKS
- B23F5/00—Making straight gear teeth involving moving a tool relatively to a workpiece with a rolling-off or an enveloping motion with respect to the gear teeth to be made
- B23F5/12—Making straight gear teeth involving moving a tool relatively to a workpiece with a rolling-off or an enveloping motion with respect to the gear teeth to be made by planing or slotting
- B23F5/16—Making straight gear teeth involving moving a tool relatively to a workpiece with a rolling-off or an enveloping motion with respect to the gear teeth to be made by planing or slotting the tool having a shape similar to that of a spur wheel or part thereof
- B23F5/163—Making straight gear teeth involving moving a tool relatively to a workpiece with a rolling-off or an enveloping motion with respect to the gear teeth to be made by planing or slotting the tool having a shape similar to that of a spur wheel or part thereof the tool and workpiece being in crossed axis arrangement, e.g. skiving, i.e. "Waelzschaelen"
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T409/00—Gear cutting, milling, or planing
- Y10T409/10—Gear cutting
- Y10T409/101431—Gear tooth shape generating
- Y10T409/10477—Gear tooth shape generating by relative axial movement between synchronously indexing or rotating work and cutter
- Y10T409/105088—Displacing cutter axially relative to work [e.g., gear shaving, etc.]
- Y10T409/105247—Using gear shaper-cutter
- Y10T409/105565—Cutting rotating work, the axis of which lies in a plane intersecting the cutter axis
Definitions
- the invention relates to a method for incorporating deposits in left and right tooth flanks of the teeth of a toothed work gear by WälzWarlen, in which the work gear and an arranged in a Achsnchwinkel to the work gear cutting teeth with right and left cutting edges having cutting wheel continuously rotatably in a fixed speed ratio, the cutting teeth engage in the tooth flanks in a chip-removing manner and the feed has at least one movement component in the direction of extension of the teeth of the work wheel.
- the invention is therefore based on the object to increase the range of applications of the method.
- Cutting edges which processes one of the two tooth flanks of the teeth.
- the differential feed is generated by a change in the phase position of the rotating in a fixed speed ratio axes of the workpiece and the tool.
- the workpiece and tool make a relative rotation in one direction of rotation.
- the depth of entry of the cutting edge into the respective tooth flanks increases in conjunction with the axial displacement of the cutting edge.
- the other cutting edge runs freely through the tooth gap.
- the axial feed component is superimposed on a differential feed component in the reverse direction of rotation.
- the one tooth flank runs freely through the tooth gap in the second processing step.
- the axial feed component ie the feed component in the extension direction of the tooth flank
- the workpiece axis of rotation and the tooth engagement point, in which the cutting tooth of the cutting wheel engages in the tooth flank of the work wheel spans a plane.
- This plane is crossed by the tool axis in an axis cross angle.
- the point through which the tool axis passes through this plane lies in an in-plane straight line which is transverse to the workpiece axis and passes through the tooth engagement point.
- the axis of the cross-axis or the radial distance of the point of intersection of the tool spindle axis in the plane of rotation of the work gear can also be varied during the advance in the tooth flank direction.
- the machining for creating the deposits can begin, for example, with the processing of the left or the right tooth flanks. At first only the left or right cutting edges are used. For example, if the left flank is processed, only the left cutting edges of the cutting wheel are machined in the left flank of the tooth during this first processing phase, while the right cutting edges dive freely through the gap.
- the differential feed takes place here by a relative rotation in the left direction.
- the processing of the right tooth flank only takes place after completion of the deposit of the left tooth flank.
- the right cutting edge engages in the cutting Right flank of the tooth of the work wheel.
- the relative feed is made by a relative rotation in the left-hand direction.
- the method not only straight-toothed gears, and not only internally toothed, but also externally toothed and helical gears provided with deposits. It is thus possible in particular to incorporate deposits into the tooth flanks of the teeth of helically toothed workpieces by means of an individual differential feed component in the left-hand rotation direction or the right-hand rotation direction.
- the two differential feed components are symmetrical.
- the two differential feed components deviate from each other so that asymmetrical deposits can be generated.
- the transition region between the backing edge and the non-deposited portion of a tooth flank is formed by an oblique exit edge.
- the axial length of the backing edge which extends obliquely inward in a deposit angle to the tooth flank, is larger, preferably more than twice as large, as the exit flank which extends at an exit angle at an angle to the tooth flank.
- the deposit angles are in a range between 2.5 ° to 17 °, preferably between 4 ° and 15 °.
- the exit angle is preferably greater than 15 °.
- gear which is installed in a transmission, only a minimal axial portion of the tooth flank not as a support surface for attacking a counter tooth flank of a counter gear available.
- first tooth flanks of a first counter gearwheel and on the non-deposited sections of the tooth flanks can engage the tooth flanks of a second counter gearwheel.
- a cutting wheel with a relatively small diameter compared to the diameter of the work wheel is used.
- the ratio of the teeth of the cutting wheel to the teeth of the work wheel is preferably in a range smaller than one-half, smaller than one third, smaller than a quarter, or at about one-fifth.
- the work gear has 77 teeth and the cutting wheel has 16 teeth.
- the cutting wheel can be a resharpenable or a non-sharpenable tool.
- the cutting edges may lie in a common area, for example a plane surface or a cone surface.
- the cutting wheel then has a plate grinding. But it is also envisaged that the cutting wheel has a stair grind.
- the head clearance angle of the cutting edge is preferably in a range of 6 ° to 15 °.
- the flank clearance angle of the cutting edge of the cutting wheel is at least as large as the deposit angle, preferably in each case 2 ° greater than the deposit angle. It can for example be in the range of 6 to 17 °.
- Cutting wheel is preferably not resharpenable, but has the advantage of being able to produce exit edges with a small axial extent.
- additional feed components are possible.
- With a radial feed a conical root can be created. It is also possible to simultaneously shift the Achsnchwinkel or the position of the Achsnchionss tool spindle axis and workpiece spindle axis. In particular, it is intended to use each of these degrees of freedom individually or in combination for varying the feed.
- the invention further relates to a machine tool with a tool spindle for receiving a tool and a workpiece spindle for receiving a workpiece, wherein the tool spindle and workpiece spindle can be driven by synchronized individual drives. Furthermore, electrical drives are provided with which the axial feed can be realized. The individual drives are driven by the control device by means of a control program. The control program is set up so that the machine tool performs the method described above.
- Fig. 2 is a plan view of the end face of the work wheel 1 in the region of
- FIG. 3 enlarges a plan view of deposits 6 produced in the process in tooth flanks 4, 5 of the teeth 3 of a work wheel 1, FIG.
- Fig. 4 shows the section through a tooth 3 in the area of the deposit 6 for
- Fig. 5 shows a section along the line V-V in Figure 2 for clarity
- FIG. 6 shows the section along the line VI-VI in Figure 2 to illustrate the flank free angle ⁇ , which may be in the range between 6 and 17 ° and schematically the structure of a machine tool.
- the machine tool which is shown schematically in FIG. 7, has a machine bed (not shown) with positioning drives controllable by a control device 22 for positioning the position of a tool spindle 18 relative to a workpiece spindle 19 it is a single electric drive, which is controlled by the control device 22.
- the tool spindle drives a cutting wheel 11, which rotates about the tool spindle axis 12.
- the workpiece spindle 19 is rotationally driven by a single electric drive about a rotation axis 2, and has a chuck 20, in which a toothed, to be provided with deposits Werkrad 1 is clamped.
- There is a feed device 21 is provided, with which a feed V in the axial direction of the workpiece spindle axis 2 can be realized.
- the feed V has a component of movement in the axial direction 2 of the work gear 1.
- With the control device 22 are gear 1 and cutter 11 synchronized in a predetermined speed ratio driven to each other, which the
- Tooth ratio of gear 1 and cutter 11 corresponds.
- the control device 22 is able to change the phase position of the rotation of the workpiece spindle 19 and tool spindle 18 according to a control program in order to realize a differential feed.
- the differential feed can take place both in left-hand rotation direction L and in right-hand rotation direction R.
- the phase angle also depends on the depth of penetration of the cutting wheel 11 in the work wheel 1.
- the control device 22 has a control program which is programmed such that the method described below, which is an embodiment of the invention, can be performed on the machine tool.
- the method is intended to produce the deposits shown in FIGS. 3 and 4. These are recesses in the tooth flanks 4, 5 of the teeth 3 of a pre-toothed, internally toothed work gear 1.
- the teeth 3 of the work gear 1 have tooth flanks 4, 5.
- a tooth gap arranged between two teeth 3 has left tooth flanks 4 and right tooth flanks 5.
- left deposits 6 and right flanks 7 right deposits 7 are incorporated.
- the geometric shape of the deposits is shown in FIGS. 3 and 4.
- Both the left-hand deposits 6 and the right-hand deposits 7 each have a deposit angle a which lies in a range between 2.5 ° to 17 °, preferably in a range between 6 ° to 17 °, to the left tooth flank 4 and right tooth flank 5 inward depositing flanks 8.
- the depositing flanks 8 have their greatest penetration depth into the left tooth flank 4 or right flank 5 in the region of a transition 10.
- an exit flank 9 adjoins the transition 10 which is at most half as long as the depositing flank 8
- the exit flank 9 has an exit flank angle of more than 15 ° to the tooth flank 4, 5.
- the lines which can be seen in FIGS. 3 and 6, transverse to the extension direction of the deposits 6, symbolize the individual successive sections of left and right cutting edges 14, 15 of FIG Cutting teeth 13 of a cutting wheel 11th
- the cutting wheel 11 has a plane end face.
- the end face can also be conical or staircase-shaped.
- the end face is adjacent in each case to a cutting tooth 13 to a left cutting edge 14 or to a right cutting edge 15.
- the cutting edges 14, 15 are followed by left flanks 16 or right flanks 17.
- the flank angle ⁇ of the flank 16 or 17, which corresponds to a flank clearance angle during the cut, is in the range between 6 and 17 ° and should be at least 2 ° greater than the deposit angle a.
- the head angle ⁇ in the region of the intersection of the
- Cutting edges 16, 17 is 6 to 15 °.
- the internal toothing serves as a ring gear for receiving a planetary gear.
- the planet wheels roll rolling on the oblique internal teeth.
- the internal toothing is a helical toothing in the exemplary embodiment.
- the gearing can also be straight. It is a running gear with a larger tooth height and a smaller pressure angle than a normal clutch teeth.
- the tooth height is about twice the module.
- the deposits cooperate with tooth flanks of an externally toothed counter-wheel, which rotates coaxially to the internally toothed gear. The two gears are brought into and out of axial displacement.
- the tool spindle axis 12 is brought to the workpiece spindle axis 2 at an axis cross angle ⁇ .
- the cutting wheel 11 is brought into a position in which the right cutting edge 15 rests against the right tooth flank 5 of a tooth 3.
- the tool spindle 18 and the workpiece spindle 19 are then brought into a synchronized rotation.
- a continuous feed takes place in the form of a relative displacement of the cutting wheel 11 relative to the work wheel 1, which has a movement component in the extension direction of the teeth 3.
- the feed thus has a component in the axial direction of the workpiece spindle axis 2 and a component in the direction of rotation, ie it changes continuously the phase angle between the workpiece spindle rotation and tool spindle rotation.
- FIG. 2 shows the situation after processing of the right tooth flank 5.
- the feed in the axial direction that is generally the feed in tooth flank direction of extension respectively a tangential feed based on the tooth engagement point of Cutting wheel 11 is superimposed in the workpiece 1.
- the tangential feed TL or TR is realized by a linear displacement of the tool spindle relative to the workpiece spindle in the plane of rotation of the work wheel 1.
- the workpiece spindle axis 12 is continuously displaced either to the left or to the right to provide the left flank 4 and the right flank 5 respectively with a deposit.
- This feed motion can be superimposed on a feed direction in the radial direction RD, ie transversely to the tangential displacement direction TL, TR. It is also possible to change the axis cross angle ⁇ during this tangential feed motion.
- the tool spindle axis 12 penetrates the plane of rotation of the work wheel 1, which passes through the Scheleingriffstician the cutting edge 14, 15 in a radial line of the Scheleingriff point, with respect to the axis of rotation of the work wheel 1.
- Cutting teeth 13 of the cutting wheel 11 to the teeth 3 of the work wheel 1 is less than a half, less than a third, is less than a quarter or about one fifth.
- a method which is characterized in that the deposits 6, 7 in a deposit angle ⁇ of 2.5 ° to 17 °, in particular from 4 ° to 15 ° to the tooth flank 4, 5 have inwardly extending deposit flanks 8.
- a method which is characterized in that the teeth 3 of the work wheel 1 extend obliquely to the axis 2 of the work wheel.
- a method which is characterized in that the cutting wheel 11 is moved out after reaching a maximum depth of penetration into the tooth flank 4, 5 without axial feed, in particular in the radial direction of the toothing, so that an adjoining a transition 10 outlet edge 9 is formed.
- a machine tool which is characterized by a tool spindle 18 which carries a left and right cutting teeth 14, 15 having cutting wheel 11, with a workpiece spindle 19 which carries a toothed, to be provided with deposits Werkrad 1 and with a feed device 21 at least relative displacement of the cutting wheel 11 relative to the work wheel 1 in the axial direction 2 of the workpiece spindle 19, wherein the tool spindle 19, the workpiece spindle 18 and the feed device 21 have individual electrical drives which are drivable by a Steuerungseinrich- device 22 according to a control program, the control program set up is that for incorporation of deposits 6 in left and right flanks 4, 5 of the teeth 3 of a toothed wheel 1 by skiving in two consecutive processing steps respectively by a differential and / or tangential feed component in the left-hand rotation L, TL with the left cutting edges 14th the cutting teeth 13, the left tooth flanks 4 and by a differential and / or tangential feed component in
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gear Processing (AREA)
- Turning (AREA)
- Power Steering Mechanism (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014108438.1A DE102014108438A1 (de) | 2014-06-16 | 2014-06-16 | Verfahren zum Einarbeiten von Hinterlegungen in Zahnflanken der Zähne von Zahnrädern |
PCT/EP2015/055661 WO2015192979A1 (de) | 2014-06-16 | 2015-03-18 | Verfahren zum einarbeiten von hinterlegungen in zahnflanken der zähne von zahnrädern |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3154733A1 true EP3154733A1 (de) | 2017-04-19 |
EP3154733B1 EP3154733B1 (de) | 2021-10-13 |
Family
ID=52781028
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15712314.2A Active EP3154733B1 (de) | 2014-06-16 | 2015-03-18 | Verfahren zum einarbeiten von hinterlegungen in zahnflanken der zähne von zahnrädern und werkzeugmaschine zur durchführung eines derartigen verfahrens |
Country Status (8)
Country | Link |
---|---|
US (1) | US10105774B2 (de) |
EP (1) | EP3154733B1 (de) |
KR (1) | KR102410495B1 (de) |
CN (1) | CN106457432B (de) |
CA (1) | CA2951462C (de) |
DE (1) | DE102014108438A1 (de) |
MX (1) | MX2016016580A (de) |
WO (1) | WO2015192979A1 (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012022439A1 (de) * | 2012-11-16 | 2014-05-22 | Marcel Sobczyk | Verfahren zur Bestimmung der Freiflächenkontur eines Wälzschälwerkzeuges, Wälzschälwerkzeug und dessen Verwendung |
DE102016005210A1 (de) * | 2016-04-28 | 2017-11-02 | Liebherr-Verzahntechnik Gmbh | Verfahren zur Verzahnbearbeitung eines Werkstückes |
DE102017006651A1 (de) * | 2017-07-13 | 2019-01-17 | Gleason-Pfauter Maschinenfabrik Gmbh | Verfahren zum Erzeugen eines verzahnten Werkstücks |
JP2019123030A (ja) * | 2018-01-12 | 2019-07-25 | 株式会社ジェイテクト | 歯車加工装置及び歯車加工方法 |
JP7187912B2 (ja) * | 2018-09-18 | 2022-12-13 | 株式会社ジェイテクト | 歯車加工装置及び歯車加工方法 |
CN113242776A (zh) * | 2018-12-21 | 2021-08-10 | 格里森工场 | 用于强力刮齿的独立压力角校正 |
DE102022104454A1 (de) | 2022-02-24 | 2023-08-24 | Profilator Gmbh & Co. Kg | Verfahren und Vorrichtung zum Herstellen von Hinterlegungen und Zahnrädern |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01115513A (ja) * | 1987-10-30 | 1989-05-08 | Fuji Tool & Die Co Ltd | 歯車の製造方法 |
DE3915976C2 (de) * | 1989-05-17 | 2002-01-31 | Pfauter Hermann Gmbh Co | Verfahren zur Schlichtbearbeitung der Flanken von gerad- oder schrägverzahnten, innen- oder außenverzahnten Zylinderrädern durch Wälzschälen sowie Wälzmaschine zur Durchführung eines solchen Verfahrens |
DE4122460C1 (de) | 1991-07-06 | 1992-04-23 | Praewema Werkzeugmaschinenfabrik Gmbh, 3440 Eschwege, De | |
DE4200418C1 (de) | 1992-01-10 | 1992-12-24 | Praewema Werkzeugmaschinenfabrik Gmbh, 3440 Eschwege, De | |
DE10005438A1 (de) * | 2000-02-08 | 2001-08-16 | Psw Press Und Schmiedewerk Gmb | Verfahren und Vorrichtung zur Herstellung von Kupplungsverzahnungen an Gangrädern für Schaltgetriebe |
DE10116259B4 (de) * | 2000-12-08 | 2009-12-17 | Profilator Gmbh & Co. Kg | Verfahren und Vorrichtung zum Erzeugen von Hinterlegungen an Zahnflanken |
DE10113653A1 (de) * | 2001-03-21 | 2002-09-26 | Werner Hermann Wera Werke | Werkzeugmaschinen insbesondere Abdachmaschine |
DE102005049528A1 (de) | 2005-10-17 | 2007-05-10 | Profilator Gmbh & Co. Kg | Verfahren zum Herstellen von Schiebemuffen |
DE102005058731A1 (de) * | 2005-12-08 | 2007-06-14 | Profilator Gmbh & Co. Kg | Vorrichtung und Verfahren zum Erzeugen von Hinterlegungen sowie ein Messerkopf |
JP4875601B2 (ja) * | 2007-12-14 | 2012-02-15 | 三菱重工業株式会社 | 樽形ウォーム状工具 |
CN101526129B (zh) * | 2009-02-27 | 2011-07-27 | 南京航空航天大学 | 螺旋渐开线齿轮及其加工方法 |
EP2537615B1 (de) * | 2011-06-21 | 2014-11-26 | Klingelnberg AG | Robustes Verfahren zum Wälzschälen |
EP2570217B1 (de) * | 2011-09-15 | 2014-11-05 | Klingelnberg AG | Semi-Completing Wälzschälverfahren und Vorrichtung mit entsprechendem Wälzschälwerkzeug zum Ausführen eines Semi-Completing Wälzschälverfahrens |
EP3034219B1 (de) * | 2014-12-16 | 2019-05-08 | Klingelnberg AG | Wälzschälverfahren mit Mehrschnittstrategie |
-
2014
- 2014-06-16 DE DE102014108438.1A patent/DE102014108438A1/de active Pending
-
2015
- 2015-03-18 EP EP15712314.2A patent/EP3154733B1/de active Active
- 2015-03-18 WO PCT/EP2015/055661 patent/WO2015192979A1/de active Application Filing
- 2015-03-18 CN CN201580032576.9A patent/CN106457432B/zh active Active
- 2015-03-18 MX MX2016016580A patent/MX2016016580A/es unknown
- 2015-03-18 KR KR1020177001299A patent/KR102410495B1/ko active IP Right Grant
- 2015-03-18 CA CA2951462A patent/CA2951462C/en active Active
- 2015-03-18 US US15/319,056 patent/US10105774B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
WO2015192979A1 (de) | 2015-12-23 |
KR20170021291A (ko) | 2017-02-27 |
CA2951462A1 (en) | 2015-12-23 |
DE102014108438A1 (de) | 2015-12-17 |
CN106457432A (zh) | 2017-02-22 |
CA2951462C (en) | 2022-06-14 |
KR102410495B1 (ko) | 2022-06-16 |
MX2016016580A (es) | 2017-03-20 |
CN106457432B (zh) | 2019-06-11 |
EP3154733B1 (de) | 2021-10-13 |
US10105774B2 (en) | 2018-10-23 |
US20170113289A1 (en) | 2017-04-27 |
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